My company using Dialux 4.13 external calculations in Aviation/Ports/sports etc. I want to open them in Dialux EVo but Evo doesnt allow me to open Dialux 4.12 external files. Some of the projects takes 3 to 4 years to complete and all of them designed in Dialux 4.13 and I cannot see them, Dialux EVO. As going forward I want to use Dialux Evo but my company prefer to use Dialux 4.13 because Dialux EVO is not as comprehensive as Dialux 4.13 for external calculations.

Any help and thoughts?